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标题: 菜鸟求助 [打印本页]

作者: yang    时间: 2002-10-20 15:39     标题: 菜鸟求助

俄是菜鸟,请文如何解这各体.

某段路程200KM,一人顺风350km/h,回程时逆风250km/h, 求全程平均速度的近似直
   280   290   300




[em10]
作者: 猫猫头    时间: 2002-10-20 15:45

400/(200/350+200/250)
作者: yang    时间: 2002-10-20 16:01

HI,MAOMAOTOU. I had a mistake about a wrong director,like 400/<(200/350-v)+(200/250+v)> Thank u very much




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